Titleist calls its 913D2 and 913D3 drivers the fastest, most consistent the company has ever designed. They are also Titleist's most playable and forgiving drivers, primarily as a result of improved launch conditions from a lower, more optimal Center of Gravity position, a new rear SureFit Tour weight and the fitting precision provided by the SureFit Tour adjustable hosel.

"The new 913D2 and 913D3 drivers offer the highest performance of any adjustable drivers on the market, particularly when it comes to speed and forgiveness," said Titleist Vice Preisdent of Research and Development Dan Stone. "Every serious golfer, from tour players to amateurs of all skill levels, will experience more distance potential and better driving performance with 913."

The 913D2 driver features a 460cc full-pear shaped head designed for maximum forgiveness and a slight draw bias, while the 913D3 has a slightly smaller 445cc classic pear shape that is forgiving with extra workability. Unlike the 910 series, both D2 and D3 models now offer the same launch and spin characteristics to provide maximum fitting flexibility.

"Golfers can now choose their 913 model based on size or shape preference, amount of forgiveness or workability, and amount of draw bias," said Stone. "They can then dial-in their launch and spin settings precisely using the SureFit Tour hosel."

The 913D2 and 913D3 drivers deliver faster, more consistent ball speeds across the face due to a new forged, variable thickness face insert that is the fastest face insert ever designed by Titleist.

The 913's 6-4 Titanium face insert has a thick central portion that mirrors the outer face profile. As you move out from the center, however, the insert is thinner and tapered so that it matches up with the body thickness at the edge of the face. It is also 2 grams lighter than the 910's face insert, and that mass is redistributed to the SureFit Tour weight low on the head.

"We are always engineering our center face ball speed to the maximum, but the new insert allows for a more consistent deflection across the whole face, which gives us more ball speed and more distance across a larger area of the face," Stone said. "The face insert is not a symmetric geometry, it's a complex structure and it required us to really think outside the box. We had to invent a new process just to produce it."

The new insert has increased the maximum ball speed area up to 11 percent from Titleist's previous 910 drivers. That, Titleist says, results in upwards of 2 mph of additional ball speed in certain hit locations, which translates to up to 4-6 additional yards.

While past generation D2 and D3 models each featured different launch and spin characteristics, the new 913D2 and 913D3 drivers have equivalent launch and spin because their Center of Gravity positions are equally low. To accomplish this, the Center of Gravity in the 913D2 was lowered to produce similar launch and spin to 913D3. To do this, Titleist engineers improved the casting and polishing process to produce an ultra-thin crown that allowed for more mass to be redistributed low and deep in the head.

The 913 drivers also feature a lower, flatter sole profile than the 910, and the new SureFit Tour weight on the rear sole further optimizes the Center of Gravity for speed and forgiveness. This weight has a new, flat geometry with a screw that holds the weight in place but doesn’t extend up into the driver head. Also, the standard SureFit Tour weight has increased from 7 grams to 9 grams, taking the 2 grams of weight saved from the new forged face insert and reapplying it in this lower, better position.

The SureFit Tour hosel, which debuted on the 910 drivers, allows golfers to set their loft and lie independently – higher or lower, and for more draw or fade – for improved shot control and maximum distance.

"We call it 'Tour Van-in a hosel' because that was our inspiration for designing SureFit Tour in that it provides all the power of a tour van – the ability to bend for loft and lie, and interchange shafts – right on the tee at the point of fitting," Stone said.

The dual angle SureFit Tour hosel features a sleeve and ring, each with four settings. The sleeve settings are numbered 1, 2, 3, 4 and the ring settings are lettered A, B, C, D. In total there are 16 settings, each creating a unique loft and lie combination.

The 913s featuring an improved toe profile, and the head retains its black PVD finish with a new black body paint.

The 913D2 drivers come in lofts of 8.5, 9.5, 10.5 and 12 degrees of loft in both right- and left-handed models, and a 7.5-degree right-handed model. The D3 also comes in a 7.5-degree right-handed model, along with right- and left-handed models in 8.5, 9.5 and 10.5 degrees. They carry a suggested retail price of $449 per club.